Engine stop



ec 27, 1932- G. H. MCFEATERS 1,892,313

ENGINE STOP Filed May 15. 1929 5 Sheets-Sheet l 'Mrm/ s@ ff-J Invenvrf Bec. 27, 1932. G, H MCFEATERS 1,892,313

ENGINE STOP Filed May I5. 1929 3 Sheets-Sheet 2 m lweiztr:

650565 H NW2-,475425,

War/Mya.

Dec. 27, 1932. G. H. MCFEATERS r 1,892,313

ENGINE STOP Filed May l5, 1929` 5 Sheets-Sheet 5 [Qwedbr:

650/265 M-CFZe-TEES,

fried 1.5,

w1.Tension reiees stops end7 ie n iirired iiiereo., reis-tes more psriieninriy sops for use in sopping unifier? en'ines and sirniier devices, end has for its obgeci; die provision s.. siop sdeped io fautornniieeiigf stop engine and preveni'J the engine running diie to seine unforeseen happening.

1 is eievetion showing ne envnis invenion eppiied 'to die sisnderd unii'iow engine.

2 is e regrneniery eievs'ien on "ie showing; the siop construcion in ore psrtienieriy so A designates e neri;-

ins, 'die "reti-er t engfne and the reiter 3f `esil faire engin cain-sinri io which dre si y of ieniion is appiied. The sirs is o inno two paris Q and 3 Win ii nre @onnnied in bearings 1- end 5 end e joined eparebie conpiinfr or clutch C forming eri o2 die sop rneenanisln of ibis inven- J'riic'ow stv/earn engines ere siandard nie.- ciiines end wiii not be shown nor described Tire unifionv engine is a donbie engine, vnailing steam in boh cylinders et ine seine lpressure. The intake vaives are two poppervaives to each cylinder or 'four to the engine. rifhe Jfour vaives are controlled by faire cern-shaft B so that stopping of the part oi the cern-sheii B operating the intake waives sine engine Wiii cause iie immediate @Looping o the engine.

The eonpiing or Cini-ch k firedij;

C comprises coin piling disks f i mounied on the .'d'seeni ends oi tire paris i2 and respeciie cern-shaft B. The disks G and 7 'iveiy, orC

rre provided with dinnieiricniiy arranged sois 8 and 97 respecireiy. which are spaced nro their periphery.

"onneeing fingers are piroeiiy monnirees. .ser-ai no. seeeee.

ed in the sios 9 in the disk 2' and the forward ends of iie'ngers 10 are adapted to ne removably engaged in the siots 8 of ldie disk S While he rear ends project away from the disk Y along the shaft part 3. rlhe rear ends of tire fingers 10 are connecied together by eoiied springs 12 which norrnaiiy Lend to Duii the rear ends of said fingers inwardly against rire shaft peri 3.

fr nger operating cone 13 is' siidabiy mounted on the shaft pari; I3 and is adapted to be moved under ine fingers 10 to move tiiein ino the sios 8 and oui; from under the iingers 1G to permit the springs, 12 to move 4the fingers oui oi the siois 8.

The cone 13 is provided with n circumereni'izii groove :it iis ia f end and the ingers 10 are euch provided with e spring inten 15 adoped to enier iiie groove 111 when iLie eene ifi is moved under the iingers to yieidobiy iroid ine cone in position.

A Flange 16 is provided on iie large end or riie cone and pressure is adeped io be led against ine izinge 16 to cerise the @one o more outl from under' the fingers 10.

fr supporting sii-.rndzird 1'? is mounted beiow die coupling C and serves Eo support a bei! crank inver 15%. The beii crunk ieier 18 is composed of s, short and iong erin and is pivon 1y connected adjacent tile outer end of iis snorterin io ihe standard 17 by a pivo't pin 19. The siior erin or iiie ierer 1S has n roiier 2G ai. iis outer end adopted io engage the innge 1G on the cone 13 n'iiiie the end of die long nrrn oi the ieif'er 1S is provided Wiiii e. Weight Q1.

The Weight 21 is `provided with en arm 21a which projees iiirounjii an opening; 22 in e guide piunn'er niouned for vericni Inoveineniy in guide ings Qi secured io iie nearing standard oi die bearing` 5.

A suiiabie soienoid Coii 2o is supported by a back-pini@ 2T sec red bcween die `guide iugrs QJ; and when engaged. is @denied to niireci n icier 23 n'iiieii is hinged. ai. one end. as at 25. io iiie soienoid freine.

The guide. piunler QB is provided with n pivoini inten adapted io 'ne engaged over a ing 31 on the iovcer end of ine solenoid freine. when die ineen 50 is engaged over the lug 31 it will hold the long arm of the hell crank lever18 and the guide plunger 23 in raised position so that the roller 20 is out of engagement with the flange 16 of the cone In order to provide for automatically disengaging the latch 30 and the lug 31 so as to permit the long arm of the lever 18 to drop and force the short arm and roller 20 against the flange 16 of the cone 13, a kick pin 32 is mounted in the lower end of the lever 28 and when the solenoid 26 is energized the lever 28 will be attracted and move the kick pin 32 inwardly to disengage the latch 30.

The solenoid 26 is adapted to have its energizing circuit completed through a standard centrifugal switch 35 operated by a pulley 36 connected to a pulley 37 on the driving part 3 of the cam shaft B by a belt 38. The switch 35 is set to remain open until the shaft B is rotating beyond a predetermined maximum speed at which time the switch will automatically close and complete the energizing circuit to the solenoid coil 26.

The switch 35 may be of any desired construction, one form of which is illustrated and comprises a bail governor 35"l which op crates when the speed of rotation exceeds a predetermined maximum to rock a lever 35b and close contacts 36a to complete the circuit to the solenoid coil 26.

In operation, assuming that the driving part 3 of the cam-shaft B is coupled to the driven part 2 by the coupling C and the apparatus is in operation, the coupling C will remain connected until the shaft B exceeds the predetermined maximum speed for which the switch 35 has been set.

When, for any reason, the engine exceeds its predetermined speed, the shaft B. which is operated at the engine speed, will cause the switch 35 to operate and close the circuit to the solenoid coil 26. thus energizing said coil and attracting the lever 28. When the lever 28 is attracted. the kick pin 32 will strike the latch 30 and release said latch so as to permit the guide plunger 23 and the long arm of the lever 18 to fall. As the long arm of the lever 18 falls, the short arm wi-llbe rocked toward the flange 16 on the cone 13 and the roller 2O will engage the fiange 16 and force the cone along the shaft part 3 away from the coupling disks. As the cone 13 is started to move from under the fingers 10 of the coupling. the rear ends oi the fingers will be forced against the inclined cone face by the springs 12 and will aid in forcing the cone along the shaft part 3.

As the cone 13 moves from under the fingers 10, the" fingers 10 will be rocked about their pivotal mountings so as to disengage their forward ends from the slots 8 in the disk 6, thereby breaking the driving connection between the shaft parts 2 and 3 and causing the engine to stop.

If desired, various other switches, either hand or mechanically operated, may be pro-- vided for closing the energizing circuit to the coil 26 so as to provide various safety stops.

While I have shown and described one specific embodiment ot my invention it will be understood that I do not wish to be limited thereto, since various modifications may be made without departing from the scope oi' my invention, as defined in the appended claims.

1. The combination with a two-part shaft arranged end for end in alinement, one of said shaft parts ybeing a driving member and the other part being a driven member, of a separable coupling for said shaft parts, said coupling comprising a fixed coupling disk on the driving part of said shaft, a second fixed coupling disk on the driven part of said shaft, said coupling disks having diametrically :ir-- ranged slots in their periphery, yieldable connecting fingers pivotally mounted in the slots in said disk on said driving part of said shaft and adapted to enter the slots in said disk on the driven part of said shaft to form a driving connection between said disks, means tending to normallyv disengage said fingers from the slots in the disk on said driven part of said shaft, means for positively holding said fingers in the slots in said disk on said driven part of said shaft, and means operable by the speed of the driving part of said shaft when said shaft exceeds a predetermined maximum speed for automatically rendering said last'named means inoperative.

2. rThe combination with a two-part shaft arranged end for end in alinement, of a separable coupling for said shaft parts, said cou pling comprising a coupling disk fixed on the adjacent ends of said shaft parts, said disks having slots in their peripheries, connecting fingers pivotally mounted in the slots in one of said disks and adapted to be engaged in the slots in the other of said disks to form a driving connection, means tending to normally urge said ingers out of the position in which they form a driving connection, means for positively holding said iingers in position to form a driving connection, andmeans operable by the speed of one of said shaft parts when said part exceeds a predetermined maximum speed or automatically rendering said last named means inoperative.

3. rthe combination with a. twopart shaft arranged end for end in alinement, of a separable coupling for said shaft parts, said coupling comprising a coupling disk fixed on the adjacent ends of said shaft parts, said disks having slots in their peripheries, connecting fingers pivotally mounted in the slots in one of said disks and adapted to be engaged in the slots in the other of said disks to forni a driving connection, said fingers projecting an anl appreciable distance along the shaft part be- `vond said disk to which they are pivoted, an operating cone slidabl)Y mounted on the said shaft part along which said fingers project, -said cone being adapted to be i'noved under the projecting ends of said fingers to positively hold said fingers in position to form a driving connection. means tending to normally rock said fingers ort of the position in'which they Lorm a driving connection, weight-operatedmeans for moving said cone out from under said fingers, and electrically operated trip means for releasing said Weight-operated means, and means operable bv the speed of one of said shaft parts when said part eX- ceeds a predetermined maximum speed for energizing said electrically operated trip means.

4. In combination, a two-part shaft having its parts arranged in end for end alinement,

one of said shaft parts being a driving member and the other part being a driven member, a separable coupling for said shaft parts, said coupling comprising a fixed coupling disk on the driving part of said shaft, a second fixed coupling disk on the driven part of said shaft, Said coupling disks having diametrically arranged slots in their periphery, vieldable connecting fingers pivotallv mounted. in the slots in said disk on said driving part of said shaft and adapted to enter the slots in said disk on the driven part of said shaft to form a driving connection between said disks, means tending to normally disengage said fingers from the slots in the disk of said driven part of said shaft, means for positively holding said fingers in the slots in said disk on said driven part of said shaft, and means for withdrawing said holding means.

5. In combination, a two-part shaft havits parts arranged in end for end alinement, one of said shaft parts being a driving member andthe other part being a driven member. a separable coupling for said shaft parts, said coupling comprising a fixed coupling disk on the driving part of said shaft, a second fixed coupling disk on the driven part of said shaft, said coupling disks having siots in their peripheries, connecting fingers pivotallj,v mounted in the slots in said disk 0n said driving part of said shaft and adapted to enter the slots in said disks on the driven part of Y said shaft to form a driving connection between said disks, said fingers projecting an appreciable distance along the driving part of said shaft beyond the disk on said shaft part, an operating cone Vslidably mounted on said driving part of said shaft, said cone being adapted to be moved under the projecting ends of said fingers to positively hold said fingers in position to form a driving connection, means tending to normally rock said fingers out of the position in GEORGE H. MCFEATERS. 

